The only way to break a bad habit was to replace it with a better habit.

For a long time, I was afraid to be alone. I had to learn how to be alone. And there are still times when I think, Uh-oh! I gotta talk to somebody here or I'm gonna go crazy! But I like to be alone. Now I do. I really do. There's a big luxury in solitude.

I can't hit on women in public any more. I didn't decide this; it just doesn't feel right at my age.

I never thought in terms of typing myself, because I wasn't that successful. After an actor has done a few pieces of work, his naïveté is the part of the craft he has to nurture most.

The less people know about me, the easier my job is.

The stage has a certain discipline. But the ultimate standard is more exacting in film, because you have to see yourself and you are your own toughest critic.

I was particularly proud of my performance as the Joker. I considered it a piece of pop art.